搜索结果: 1-15 共查到“理学 top quark”相关记录23条 . 查询时间(0.078 秒)
The top quark is very special. It’s the heaviest known elementary particle and therefore strongly interacts with the Higgs boson. The top quark’s interactions with other particles provide promising le...
Top-quark pair cross-section measurement in the lepton+jets channel
Top-quark pair cross-section measurement lepton+jets channel
2011/9/14
ps =7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider (LHC). Events are selected in the lepton+jets topology by requiring a single lepton (electron or muon), ...
Top quark forward-backward asymmetry at Tevatron and its implications at the LHC
quark asymmetry LHC
2011/4/7
Top quark forward-backward asymmetry at Tevatron and its implications at the LHC。
Search for single top quark production via contact interactions at LEP2
single top quark production via contact interactions LEP2
2011/4/6
Search for single top quark production via contact interactions at LEP2 。
Measurement of the W boson helicity in top quark decays using 5.4 fb^-1 of ppbar collision data
W boson helicity top quark decays 5.4 fb^-1 of ppbar collision data
2011/1/5
We present a measurement of the helicity of the W boson produced in top quark decays using
t¯t decays in the ℓ+jets and dilepton final states selected from a sample of 5.4 fb−1 of co...
The top quark has been discovered in 1995 by the CDF and D0 experiments located at the two
beam-crossing points at the Tevatron p ¯ p collider. The top quark is the most massive of the known ele...
New physics effects on top quark spin correlation and polarization at the LHC: a comparative study in different models
New physics effects top quark spin correlation and polarization LHC: comparative study different models
2011/1/6
Extensions of the Standard Model often predict new chiral interactions for top quark, which
will contribute to top quark spin correlation and polarization in t¯t production at the LHC. In
this ...
The Matrix Element Method and its Application in Measurements of the Top Quark Mass
Matrix Element Method Top Quark Mass
2010/3/16
The most precise measurements of the top quark mass are based on the Matrix Element method, which is designed to minimize the statistical uncertainty. We present a detailed description of this analysi...
The experimental status of measurements of the top quark mass is reviewed. After an introduction to the definition of the top quark mass and the production and decay of top quarks, an in-depth compari...
Measurement of W-Boson Polarization in Top-quark Decay in ppbar Collisions at sqrt(s) = 1.96 TeV
W-Boson Polarization Top-quark Decay
2010/3/16
We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb^-1 of ppbar collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c^2, three measu...
Observation of Single Top Quark Production at the Tevatron Collider
Single top quarks electroweak production Tevatron collider
2010/3/15
On March 4, 2009, the DZero and CDF collaborations at Fermilab's Tevatron Collider submitted papers to Physical Review Letters announcing observation of single top quark production. This review paper ...
Measurement of the Top Quark Mass and ppbar -> ttbar Cross Section in the All-Hadronic Mode with the CDFII Detector
Top Quark Mass ppbar All-Hadronic Mode
2010/3/15
We present a measurement of the top quark mass and of the top-antitop pair production cross section using p-pbar data collected with the CDFII detector at the Tevatron Collider at the Fermi National ...
NNLL resummation for s-channel single top quark production
next-to-next-to-leading-logarithm next-to-next-to-leading orde top quark
2010/3/15
I present the next-to-next-to-leading-logarithm (NNLL) resummation of soft and collinear gluon corrections to single top quark production in the s channel. Attaining NNLL accuracy involves the calcula...
Search for single top quark production in pbar p collisions at sqrt{s}=1.96 TeV in the missing transverse energy plus jets topology
top quark pbar p collisions transverse energy
2010/3/15
We report a search for single top quark production with the CDF II detector using 2.1 fb-1 of integrated luminosity of pbar p collisions at sqrt{s}=1.96 TeV. The data selected consist of events charac...
Spin Correlation Effects in Top Quark Pair Production at the LHC
Large Hadron Collider Spin Correlation Top Quark Pair Production
2010/3/15
At a 14 TeV proton-proton collider, the Large Hadron Collider (LHC), we show that top quark pair production is dominated at low invariant mass by the fusion of two like-helicity gluons, producing top ...